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semihost_api.h
- Committer:
- jamesadevine
- Date:
- 2016-04-07
- Revision:
- 0:e1a608bb55e8
File content as of revision 0:e1a608bb55e8:
/* mbed Microcontroller Library * Copyright (c) 2006-2013 ARM Limited * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #ifndef MBED_SEMIHOST_H #define MBED_SEMIHOST_H #include "device.h" #include "toolchain.h" #ifdef __cplusplus extern "C" { #endif #if DEVICE_SEMIHOST #ifndef __CC_ARM #if defined(__ICCARM__) inline int __semihost(int reason, const void *arg) { return __semihosting(reason, (void*)arg); } #else #ifdef __thumb__ # define AngelSWI 0xAB # define AngelSWIInsn "bkpt" # define AngelSWIAsm bkpt #else # define AngelSWI 0x123456 # define AngelSWIInsn "swi" # define AngelSWIAsm swi #endif static inline int __semihost(int reason, const void *arg) { int value; asm volatile ( "mov r0, %1" "\n\t" "mov r1, %2" "\n\t" AngelSWIInsn " %a3" "\n\t" "mov %0, r0" : "=r" (value) /* output operands */ : "r" (reason), "r" (arg), "i" (AngelSWI) /* input operands */ : "r0", "r1", "r2", "r3", "ip", "lr", "memory", "cc" /* list of clobbered registers */ ); return value; } #endif #endif #if DEVICE_LOCALFILESYSTEM FILEHANDLE semihost_open(const char* name, int openmode); int semihost_close (FILEHANDLE fh); int semihost_read (FILEHANDLE fh, unsigned char* buffer, unsigned int length, int mode); int semihost_write (FILEHANDLE fh, const unsigned char* buffer, unsigned int length, int mode); int semihost_ensure(FILEHANDLE fh); long semihost_flen (FILEHANDLE fh); int semihost_seek (FILEHANDLE fh, long position); int semihost_istty (FILEHANDLE fh); int semihost_remove(const char *name); int semihost_rename(const char *old_name, const char *new_name); #endif int semihost_uid(char *uid); int semihost_reset(void); int semihost_vbus(void); int semihost_powerdown(void); int semihost_exit(void); int semihost_connected(void); int semihost_disabledebug(void); #endif #ifdef __cplusplus } #endif #endif